CH629024A5 - Verfahren zum herstellen eines varistorkoerpers aus zinkoxid. - Google Patents
Verfahren zum herstellen eines varistorkoerpers aus zinkoxid. Download PDFInfo
- Publication number
- CH629024A5 CH629024A5 CH1537876A CH1537876A CH629024A5 CH 629024 A5 CH629024 A5 CH 629024A5 CH 1537876 A CH1537876 A CH 1537876A CH 1537876 A CH1537876 A CH 1537876A CH 629024 A5 CH629024 A5 CH 629024A5
- Authority
- CH
- Switzerland
- Prior art keywords
- reheating
- varistor
- temperature
- varistors
- leakage current
- Prior art date
Links
- XLOMVQKBTHCTTD-UHFFFAOYSA-N Zinc monoxide Chemical compound [Zn]=O XLOMVQKBTHCTTD-UHFFFAOYSA-N 0.000 title claims description 26
- 239000011787 zinc oxide Substances 0.000 title claims description 13
- 238000004519 manufacturing process Methods 0.000 title claims description 7
- 229960001296 zinc oxide Drugs 0.000 title 1
- 235000014692 zinc oxide Nutrition 0.000 title 1
- 238000003303 reheating Methods 0.000 claims description 31
- 238000001816 cooling Methods 0.000 claims description 8
- 238000000034 method Methods 0.000 claims description 8
- 238000012360 testing method Methods 0.000 claims description 8
- 239000000919 ceramic Substances 0.000 claims description 7
- 239000000203 mixture Substances 0.000 claims description 7
- 238000005245 sintering Methods 0.000 claims description 3
- 238000010583 slow cooling Methods 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 2
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 2
- 230000000694 effects Effects 0.000 claims description 2
- 230000002093 peripheral effect Effects 0.000 claims description 2
- 238000010438 heat treatment Methods 0.000 claims 6
- 239000002002 slurry Substances 0.000 claims 4
- 239000000654 additive Substances 0.000 claims 3
- 238000003825 pressing Methods 0.000 claims 3
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims 2
- 229910000416 bismuth oxide Inorganic materials 0.000 claims 2
- 239000004927 clay Substances 0.000 claims 2
- TYIXMATWDRGMPF-UHFFFAOYSA-N dibismuth;oxygen(2-) Chemical compound [O-2].[O-2].[O-2].[Bi+3].[Bi+3] TYIXMATWDRGMPF-UHFFFAOYSA-N 0.000 claims 2
- 239000000945 filler Substances 0.000 claims 2
- 238000010285 flame spraying Methods 0.000 claims 2
- 229910052751 metal Inorganic materials 0.000 claims 2
- 239000002184 metal Substances 0.000 claims 2
- 239000000843 powder Substances 0.000 claims 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims 2
- ILRRQNADMUWWFW-UHFFFAOYSA-K aluminium phosphate Chemical compound O1[Al]2OP1(=O)O2 ILRRQNADMUWWFW-UHFFFAOYSA-K 0.000 claims 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims 1
- 239000011230 binding agent Substances 0.000 claims 1
- 239000013078 crystal Substances 0.000 claims 1
- 230000006866 deterioration Effects 0.000 claims 1
- KZHJGOXRZJKJNY-UHFFFAOYSA-N dioxosilane;oxo(oxoalumanyloxy)alumane Chemical compound O=[Si]=O.O=[Si]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O.O=[Al]O[Al]=O KZHJGOXRZJKJNY-UHFFFAOYSA-N 0.000 claims 1
- 230000007774 longterm Effects 0.000 claims 1
- 238000013035 low temperature curing Methods 0.000 claims 1
- 229910052863 mullite Inorganic materials 0.000 claims 1
- 230000002035 prolonged effect Effects 0.000 claims 1
- 238000010791 quenching Methods 0.000 claims 1
- 230000000171 quenching effect Effects 0.000 claims 1
- 230000002441 reversible effect Effects 0.000 claims 1
- 238000005507 spraying Methods 0.000 claims 1
- 230000036962 time dependent Effects 0.000 claims 1
- 238000002474 experimental method Methods 0.000 description 15
- 239000011248 coating agent Substances 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- MYMOFIZGZYHOMD-UHFFFAOYSA-N Dioxygen Chemical compound O=O MYMOFIZGZYHOMD-UHFFFAOYSA-N 0.000 description 2
- 239000003570 air Substances 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 239000012080 ambient air Substances 0.000 description 1
- 238000001035 drying Methods 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 238000013112 stability test Methods 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01C—RESISTORS
- H01C7/00—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material
- H01C7/10—Non-adjustable resistors formed as one or more layers or coatings; Non-adjustable resistors made from powdered conducting material or powdered semi-conducting material with or without insulating material voltage responsive, i.e. varistors
- H01C7/105—Varistor cores
- H01C7/108—Metal oxide
- H01C7/112—ZnO type
Landscapes
- Engineering & Computer Science (AREA)
- Microelectronics & Electronic Packaging (AREA)
- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Thermistors And Varistors (AREA)
- Compositions Of Oxide Ceramics (AREA)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US05/643,541 US4046847A (en) | 1975-12-22 | 1975-12-22 | Process for improving the stability of sintered zinc oxide varistors |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH629024A5 true CH629024A5 (de) | 1982-03-31 |
Family
ID=24581246
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH1537876A CH629024A5 (de) | 1975-12-22 | 1976-12-07 | Verfahren zum herstellen eines varistorkoerpers aus zinkoxid. |
Country Status (7)
| Country | Link |
|---|---|
| US (1) | US4046847A (enrdf_load_stackoverflow) |
| JP (1) | JPS5287695A (enrdf_load_stackoverflow) |
| AU (1) | AU504717B2 (enrdf_load_stackoverflow) |
| BR (1) | BR7608567A (enrdf_load_stackoverflow) |
| CH (1) | CH629024A5 (enrdf_load_stackoverflow) |
| DE (1) | DE2651890A1 (enrdf_load_stackoverflow) |
| SE (1) | SE408605B (enrdf_load_stackoverflow) |
Families Citing this family (31)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4147670A (en) * | 1975-12-04 | 1979-04-03 | Nippon Electric Co., Ltd. | Nonohmic ZnO ceramics including Bi2 O3, CoO, MnO, Sb2 O.sub.3 |
| JPS52136386A (en) * | 1976-05-10 | 1977-11-15 | Marukon Denshi Kk | Method of manufacturing ceramic varistor |
| CH601135A5 (enrdf_load_stackoverflow) * | 1976-07-01 | 1978-06-30 | Bbc Brown Boveri & Cie | |
| JPS5436594A (en) * | 1977-08-29 | 1979-03-17 | Fuji Electric Co Ltd | Presarvation of voltage non-linear resistance element consisted of zinc oxide |
| US4243622A (en) * | 1978-12-07 | 1981-01-06 | General Electric Company | Method for manufacturing zinc oxide varistors having reduced voltage drift |
| US4272411A (en) * | 1979-03-08 | 1981-06-09 | Electric Power Research Institute | Metal oxide varistor and method |
| US4490014A (en) * | 1979-05-10 | 1984-12-25 | General Electric Company | Liquid crystal display with low capacitance zinc oxide varistor |
| US4297250A (en) * | 1980-01-07 | 1981-10-27 | Westinghouse Electric Corp. | Method of producing homogeneous ZnO non-linear powder compositions |
| SE421462B (sv) * | 1980-05-05 | 1981-12-21 | Asea Ab | Ventilavledare |
| US4383237A (en) * | 1980-05-07 | 1983-05-10 | Matsushita Electric Industrial Co., Ltd. | Voltage-dependent resistor |
| US4374049A (en) * | 1980-06-06 | 1983-02-15 | General Electric Company | Zinc oxide varistor composition not containing silica |
| US4409728A (en) * | 1980-10-27 | 1983-10-18 | General Electric Company | Method of making a stable high voltage DC varistor |
| JPS5812306A (ja) * | 1981-07-16 | 1983-01-24 | 株式会社東芝 | 酸化物電圧非直線抵抗体及びその製造方法 |
| US4474718A (en) * | 1981-07-27 | 1984-10-02 | Electric Power Research Institute | Method of fabricating non-linear voltage limiting device |
| US4460623A (en) * | 1981-11-02 | 1984-07-17 | General Electric Company | Method of varistor capacitance reduction by boron diffusion |
| JPS5965406A (ja) * | 1982-10-07 | 1984-04-13 | 株式会社富士電機総合研究所 | 電圧非直線抵抗体 |
| JPS59117203A (ja) * | 1982-12-24 | 1984-07-06 | 株式会社東芝 | 電圧電流非直線抵抗体 |
| CA1206742A (en) * | 1982-12-24 | 1986-07-02 | Hideyuki Kanai | Varistor |
| US4510112A (en) * | 1983-01-21 | 1985-04-09 | The United States Of America As Represented By The United States Department Of Energy | Process for fabricating ZnO-based varistors |
| JPH0316251Y2 (enrdf_load_stackoverflow) * | 1985-03-04 | 1991-04-08 | ||
| US4940960A (en) * | 1987-12-22 | 1990-07-10 | Ngk Insulators, Ltd. | Highly densified voltage non-linear resistor and method of manufacturing the same |
| US5264169A (en) * | 1989-12-15 | 1993-11-23 | Electric Power Research Institute, Inc. | Surge stability improvement of zinc oxide varistor discs |
| US5203915A (en) * | 1991-05-22 | 1993-04-20 | Hubbell Incorporated | Passivating coating for metal oxide varistors |
| US5307046A (en) * | 1991-05-22 | 1994-04-26 | Hubbell Incorporated | Passivating coating for metal oxide varistors |
| JP2870317B2 (ja) * | 1992-09-03 | 1999-03-17 | 松下電器産業株式会社 | セラミック磁器素子の製造方法 |
| US5366935A (en) * | 1994-03-14 | 1994-11-22 | Hubbell Incorporated | Passivating coating for metal oxide varistors |
| JPH07320908A (ja) * | 1994-05-19 | 1995-12-08 | Tdk Corp | 酸化亜鉛系バリスタの製造方法および酸化亜鉛系バリスタ |
| DE4421102A1 (de) * | 1994-06-16 | 1996-01-25 | Siemens Matsushita Components | Elektrisches Bauelement |
| US5614074A (en) * | 1994-12-09 | 1997-03-25 | Harris Corporation | Zinc phosphate coating for varistor and method |
| TW466507B (en) * | 1999-10-04 | 2001-12-01 | Toshiba Corp | Voltage nonlinear resistor and its manufacture |
| SI24523A (sl) | 2013-10-02 | 2015-04-30 | Razvojni Center Enem Novi Materiali D.O.O. | Postopek izdelave varistorske keramike in varistorjev z nizkim tokom puščanja |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3867145A (en) * | 1969-04-05 | 1975-02-18 | Rank Xerox Ltd | Methanol and heat treated zinc oxide |
| JPS5519041B2 (enrdf_load_stackoverflow) * | 1972-07-20 | 1980-05-23 | ||
| US3959543A (en) * | 1973-05-17 | 1976-05-25 | General Electric Company | Non-linear resistance surge arrester disc collar and glass composition thereof |
-
1975
- 1975-12-22 US US05/643,541 patent/US4046847A/en not_active Expired - Lifetime
-
1976
- 1976-11-13 DE DE19762651890 patent/DE2651890A1/de not_active Withdrawn
- 1976-11-18 AU AU19752/76A patent/AU504717B2/en not_active Expired
- 1976-12-07 CH CH1537876A patent/CH629024A5/de not_active IP Right Cessation
- 1976-12-20 BR BR7608567A patent/BR7608567A/pt unknown
- 1976-12-21 JP JP15296476A patent/JPS5287695A/ja active Granted
- 1976-12-22 SE SE7614488A patent/SE408605B/xx unknown
Also Published As
| Publication number | Publication date |
|---|---|
| AU1975276A (en) | 1978-05-25 |
| BR7608567A (pt) | 1978-07-18 |
| JPS5287695A (en) | 1977-07-21 |
| DE2651890A1 (de) | 1977-06-23 |
| AU504717B2 (en) | 1979-10-25 |
| US4046847A (en) | 1977-09-06 |
| SE7614488L (sv) | 1977-06-23 |
| SE408605B (sv) | 1979-06-18 |
| JPS5638044B2 (enrdf_load_stackoverflow) | 1981-09-03 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PL | Patent ceased | ||
| PL | Patent ceased |